136 New Species of Sierola, With Explanatory Notes. 
127. Sierola abusa n.sp. 
9 dull shining black, legs, antennz and outer half of mandibles yellow- 
ish brown, somewhat infuscate. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture; finely, shallowly and rather closely punctate, and 
hairy. Head as wide as long, widest across the eyes, narrowing behind and 
in front, width between the eyes nearly twice the length from eye to vertex, 
length in front of the eyes not great; convex above, a little tumid beneath; 
vertical margin straight, temples rounded, eyes convex; antennz reaching the 
mesoscutum, the pedicel and first and second funicular segments longer than 
wide, the following segments as wide as long or nearly so, antennal fosse 
deep; clypeus carinate, apically depressed and projecting slightly in front of 
the anterior margin of the head, declivous at the sides, the carina extending 
backward on the top of the head beyond the base of the antenne; mandibles 
slender, curved, truncate apically and toothed, base touching the eye above; 
egula and sides of the head convex, the former medially foreshortened, as 
wide as long, anterior margin arcuately concave, posterior margin incised; 
propodeum finely rugulose; abdomen elongate ovate, smooth and polished; 
wings subinfuscate; length 2.25 mms. 
Described from one female (type) collected on Palolo Hill Trail, Oahu, 
by P. H. Timberlake, April 9, 1916. 
Type: Cat. No. 127, Bishop Museum. 
128. Sierola similis n.sp. 
@ shining black, the head dull; legs and first three segments of anten- 
ne luteous, the antennze fuscous outwardly, mandibles reddish apically. 
Head and thorax to the propodeum with a microscopically fine reticu- 
late surface sculpture, somewhat remotely and shallowly punctate, the sculp- 
ture and punctuation of the head coarser than that of the thorax; clothed 
with silvery white hairs. Head as wide as long, widest across the eyes, nar- 
rowing behind and in front, width between the eyes nearly twice the length 
from eye to vertex, length in front of the eyes not great; convex above, 
depressed in front, a little tumid beneath; vertical margin straight, temples 
rounded, eyes convex; antennz reaching the mesoscutum, all the segments 
longer than wide, the pedicel and first funicle segment twice as long as wide, 
antennal fosse deep; clypeus carinate, apically depressed and _ projecting 
slightly in front of the anterior margin of the head, sloping at the sides, the 
carina extending backward shortly on the top of the head; mandibles slen- 
der, curved, truncate apically and toothed, base not reaching the eye; gula 
and sides of the head flatly convex, the former medially foreshortened, as 
long as wide, anterior margin slightly concave, posterior margin incised; 
propodeum finely rugulose; abdomen short ovate, apically acuminate, smooth 
and polished; wings hyaline; length 2 mms. 
Described from one female (type) collected on Mt. Kaala, Oahu, by 
O. H. Swezey, August I1, 1912. 
Type: Cat. No. 128, Bishop Museum. 
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